a{
    text-decoration: none;
}
body{
    margin: 0;
    padding: 0;
    background-color: #808080;
}
div{
    position: relative;
    float: left;
}
#div_container{
    width: 80%;
    height: 100%;
    border:0px solid blue;
    margin-left: 10%;
    float: left;
    background-color: honeydew;
}
#div_customer_list{
    width: 100%;
    border: 0px solid red;
}
#div_add{
    width: 60%; margin-left: 20%; text-align: right; margin-bottom:10px;
}
#tbl_customer{
    width: 60%;
    line-height: 28px;
    margin-top: 50px;
    margin-left: 20%;
    margin-bottom: 8%;
}

#tbl_customer, #tbl_customer tr,#tbl_customer th, #tbl_customer td{
    border: 1px solid grey;
    border-collapse: collapse;
    text-align: center;
    font-size: 16px;
    font-family: "微软雅黑";
    font-weight: lighter;
    color: threeddarkshadow;
}

.w20{
    width: 20%;
    font-weight: 900;
}

.center{
    text-align: center;
}
.f30{
    font-size: 30px;
}

